Type
Zone
Age range
432.9–432.6 Ma
Wenlock
Sheinwoodian
Llandovery
Telychian
Kockelella ranuliformis
Pterospathodus pennatus procerus
Pterospathodus amorphognathoides amorphognathoides
432.90432.88432.86432.84432.82432.80432.78432.76432.74432.72432.70432.68432.66432.64432.62432.60